st, ok := r.Cache[bucket]
	if !ok {
		return BucketReplicationStats{Stats: make(map[string]*BucketReplicationStat)}
	}
	return st.Clone()
}

// NewReplicationStats initialize in-memory replication statistics
func NewReplicationStats(ctx context.Context, objectAPI ObjectLayer) *ReplicationStats {
	r := metrics.NewRegistry()
	rs := ReplicationStats{
		Cache:           make(map[string]*BucketReplicationStats),